Final answer:
Alkynes are hydrocarbons with carbon-carbon triple bonds, such as ethyne (C2H2). They are a significant class of unsaturated hydrocarbons.
Explanation:
Alkynes are a class of hydrocarbons that contain at least one carbon-carbon triple bond. An example is ethyne (C2H2).
Hydrocarbons are compounds composed of only carbon and hydrogen atoms. Alkanes have single bonds, alkenes have double bonds, and alkynes have triple bonds.
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